Not a grind at all, unless you mean the grind to rank up, which is good. Hitting your skillcap then trying to improve it really is the perfect way to get better. Only grind is Warzone Reqs aka armor, weapon skins, power cards. But yea.... vast improvement to destiny haha. When forge comes out... the flexibility you'll have will be above 3x. I remember Halo Reach.... prop hunt with friends aka a PC game in Halo... it was one of the highlights of my gaming moments just having an absolute blast with friends.